Check stab jacks. Mine are mounted on a thin steel plate that is not directly under the center of the frame. Slight flex leads to some instability. FR will be correcting when I pull out for spring. If you still have any negotiating power left, try to get them to add a winterizing bypass on the water pump as part of the deal. Unless you live in warm climate, you might need it.
2015 Freedom Express 248RBS
TV 2015 Silverado HD2500 Duramax
TST Tire Monitors
Honda 2000I + Companion
2 100W solar panels